Author Archives: Ivan Krizsan

About Ivan Krizsan

I am a software developer since the age of 15. During the last few years I have also become an author, since I very much enjoy writing as a way of learning. Currently I work mainly with integration in the Java eco-system. Google

Multipass Key-Based Authentication

By | December 23, 2020

In this article I will show how to create a Multipass virtual machine that has an additional user which can connect to the virtual machine authenticating using a private key. To accomplish this I will use cloud-init when creating the virtual machine. The cause for this is to allow creation and provisioning of Multipass virtual… Read More »

Quest For the Spring Data DynamoDB Grail

By | December 11, 2020

The following are a few words and some simple examples showing how to use Spring Data DynamoDB to store and retrieve data in a DynamoDB database. In the example, which consists of a few tests, I will use a local instance of DynamoDB running in a container. No prior knowledge of DynamoDB is assumed, though… Read More »

OpenEBS on K3S – Open Source Container Attached Storage

By | July 10, 2020

In this article I will install OpenEBS on my K3S Kubernetes cluster and present a simple example showing how to allocate storage for an application running in the cluster.I will take a slight detour to kubectl user contexts and, later, I will use a Persistent Volume and a Persistent Volume Claim to make storage available… Read More »

K3s in Multipass with Remote Management

By | March 29, 2020

This is another Kubernetes-related notebook entry in which I will document the procedure for setting up a Kubernetes cluster using K3S in virtual machines created with Canonical’s Multipass. In addition, I will describe how to configure kubectl, the Kubernetes command-line cluster management tool to manage the K3S cluster from outside of the virtual machines in… Read More »